Electrophysiological and behavioral evaluation of auditory processing before and after speech therapy intervention in children after traumatic brain injury: Case reports

Antoniaci Mariane Richetto Da Silva Antoniaci Mariane Richetto Da Silva,Avila Clara Regina Brandão De Avila Clara Regina Brandão De,Suriano Italo Capraro Suriano Italo Capraro,Andrade Adriana Neves De ,Daniela Gil

doi:10.30574/wjbphs.2021.5.3.0025

Antoniaci Mariane Richetto Da Silva Antoniaci Mariane Richetto Da Silva, Avila Clara Regina Brandão De Avila Clara Regina Brandão De + Show 3 more

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https://doi.org/10.30574/wjbphs.2021.5.3.0025

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Abstract

Objectives: to verify the effects of a speech therapy intervention program in children after moderate and severe traumatic brain injury using electrophysiological and behavioral assessment of central auditory processing. Method: Five children aged 9 to 11 years old who suffered closed brain trauma of moderate or severe degree for at least 6 months, right-handed, literate before the injury, diagnosed with Central Auditory Processing and Reading and Writing Disorders. Ten speech therapy intervention sessions were held, covering the area of language and auditory training activities. Children were submitted to electrophysiological evaluation with Long Latency Auditory Evoked Potential and behavioral assessment of central auditory processing, pre and post intervention. Results: Statistically significant, after speech therapy intervention, in the LLAEP with tone burst, there was an improvement in the latencies of the N2 component in both ears and P3 in the right ear. CAPD improves the memory test for verbal sounds in sequence and the speech test with white noise in the right ear. Conclusion: After the speech therapy intervention program in individuals with TBI it was observed: reduction of the latency of the N1 component in the left ear, in the LLAEP with tone burst; reduction of the latencies of the components N1, P2 and N2 in the right and left ears, and for the latency of the P3 only in the right ear, in the LLAEP with complex stimuli and performance improvement in the behavioral tests of central auditory memory processing for verbal sounds in sequence and speech with white noise.

Highlights

Traumatic brain injury (TBI) basically results from physical aggressions on the skull and its content, the injuries can be caused by the impact and the acceleration/deceleration movement of the brain inside the cranial box [1]
Children were submitted to electrophysiological evaluation with Long Latency Auditory Evoked Potential and behavioral assessment of central auditory processing, pre and post intervention
Statistically significant, after speech therapy intervention, in the LLAEP with tone burst, there was an improvement in the latencies of the N2 component in both ears and P3 in the right ear

Summary

Introduction

Traumatic brain injury (TBI) basically results from physical aggressions on the skull and its content, the injuries can be caused by the impact and the acceleration/deceleration movement of the brain inside the cranial box [1]. Due to the high incidence of auditory alterations in individuals with TBI, for the precise audiological diagnosis, the assessment must include behavioral procedures (pure tone and speech audiometries and behavioral evaluation of central auditory processing), electroacoustic procedures (tympanometry, acoustic reflexes, evoked otoacoustic emissions and suppression of otoacoustic emissions) and electrophysiological tests (short, middle and/or long latency auditory evoked potentials) [3, 4, 5, 6]. Basic audiological evaluation (pure tone and speech audiometry, tympanometry and acoustic reflexes measures) provides information on auditory sensitivity, auditory performance in situations of ideal hearing, mobility of the ossicular tympanic system and intra- and extra-axial abnormalities of the brainstem [3], and the behavioral assessment of central auditory processing provides an overview of the individual's hearing abilities in adverse hearing situations

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